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// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
// @dart = 2.9
import "package:expect/expect.dart";
// Regression test for dart2js, where the optimizer was too aggressive
// about parameter types of closures.
class A {
Function f;
A(this.f);
_do() => f(1);
}
main() {
int invokeCount = 0;
closure(a) {
if (invokeCount++ == 1) {
Expect.isTrue(a is int);
}
}
closure('s');
new A(closure)._do();
Expect.equals(2, invokeCount);
}